中文摘要：

以减小圆筒型横向磁通永磁直线电动机推力波动为主要目标,分别从定位力和波动力两方面展开研究.提出单相三维有限元法与傅里叶变换相结合的方法计算电机的定位力,在保证计算准确度的前提下,有效地缩短了定位力的计算时间.分析定子单元铁心厚度与极距之比对定位力大小的影响,结果表明通过对定子单元铁心厚度与极距之比的合理选取,可有效地降低电机的定位力.针对波动力的抑制,选择合适的定子单元铁心厚度与极距比、永磁体厚度和永磁体周向极弧系数来减小波动力.

英文摘要：

According to the problem of larger thrust force ripple in transverse flux PMLM,the decrease of cogging force and ripple force was investigated.The influence of different structure parameters on cogging force was calculated by singlephase three three-dimensional finite element analyses and fast Fourier transform,the special attention was paid to the influence of the length of stator segment.The results show that the amplitude of cogging force can be effectively reduced by adopted the ratio of length of stator segment and the pole pitch.The ripple force can be reduced by adopted the ratio of stator core thickness and pole pitch,permanent magnet thickness and pole pitch,permanent magnet circumferential arc coefficient.